5c093af766
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5615 42af7a65-404d-4744-a932-0658087f49c3
139 lines
5.2 KiB
C
139 lines
5.2 KiB
C
/****************************************************************************
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* sched/group_internal.h
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*
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* Copyright (C) 2007-2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __SCHED_GROUP_INERNAL_H
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#define __SCHED_GROUP_INERNAL_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdbool.h>
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#include <queue.h>
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#include <sched.h>
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#include <nuttx/kmalloc.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Any negative GID is invalid. */
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#define INVALID_GROUP_ID (pid_t)-1
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#define IS_INVALID_GID(gid) ((int)(gid) < 0)
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/****************************************************************************
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* Public Type Definitions
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****************************************************************************/
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typedef int (*foreachchild_t)(pid_t pid, FAR void *arg);
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/* This is the head of a list of all group members */
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#ifdef HAVE_GROUP_MEMBERS
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extern FAR struct task_group_s *g_grouphead;
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/* Task group data structure management */
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#ifdef HAVE_TASK_GROUP
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int group_allocate(FAR struct task_tcb_s *tcb);
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int group_initialize(FAR struct task_tcb_s *tcb);
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#ifndef CONFIG_DISABLE_PTHREAD
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int group_bind(FAR struct pthread_tcb_s *tcb);
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int group_join(FAR struct pthread_tcb_s *tcb);
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#endif
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void group_leave(FAR struct tcb_s *tcb);
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#ifdef HAVE_GROUP_MEMBERS
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FAR struct task_group_s *group_findbygid(gid_t gid);
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FAR struct task_group_s *group_findbypid(pid_t pid);
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int group_foreachchild(FAR struct task_group_s *group,
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foreachchild_t handler, FAR void *arg);
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int group_killchildren(FAR struct task_tcb_s *tcb);
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#endif
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/* Convenience functions */
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FAR struct task_group_s *task_getgroup(pid_t pid);
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/* Signaling group members */
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#ifndef CONFIG_DISABLE_SIGNALS
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int group_signal(FAR struct task_group_s *group, FAR siginfo_t *siginfo);
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#endif
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#endif /* HAVE_TASK_GROUP */
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/* Parent/child data management */
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#ifdef CONFIG_SCHED_HAVE_PARENT
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int task_reparent(pid_t ppid, pid_t chpid);
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#ifdef CONFIG_SCHED_CHILD_STATUS
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FAR struct child_status_s *group_allocchild(void);
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void group_freechild(FAR struct child_status_s *status);
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void group_addchild(FAR struct task_group_s *group,
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FAR struct child_status_s *child);
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FAR struct child_status_s *group_exitchild(FAR struct task_group_s *group);
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FAR struct child_status_s *group_findchild(FAR struct task_group_s *group,
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pid_t pid);
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FAR struct child_status_s *group_removechild(FAR struct task_group_s *group,
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pid_t pid);
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void group_removechildren(FAR struct task_group_s *group);
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#endif /* CONFIG_SCHED_CHILD_STATUS */
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#endif /* CONFIG_SCHED_HAVE_PARENT */
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/* Group data resource configuration */
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#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 0
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int group_setupidlefiles(FAR struct task_tcb_s *tcb);
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int group_setuptaskfiles(FAR struct task_tcb_s *tcb);
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#if CONFIG_NFILE_STREAMS > 0
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int group_setupstreams(FAR struct task_tcb_s *tcb);
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#endif
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#endif
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#endif /* __SCHED_GROUP_INERNAL_H */
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